Node.js Mock Test

This section presents you various set of Mock Tests related to Node.js Framework. You can download these sample mock tests at your local machine and solve offline at your convenience. Every mock test is supplied with a mock test key to let you verify the final score and grade yourself.

Answer : D

Explanation

Node.js is a very powerful JavaScript based framework/platform built on Google Chrome's JavaScript V8 Engine. It is used to delevop I/O intensive web applications like video streaming sites, single page applications and other web application. Node.js is open source, completely free, and used by thousands of developers around the world.

Answer : B

Explanation

REPL stands for Read Eval Print Loop and it represents a computer environment like a window console or Unix/Linux shell where a command is entered and system responds with an output in interactive mode.

Answer : D

Explanation

Node js is a single threaded application but it support concurrency via concept of event and callbacks. As every API of Node js are asynchronous and being a single thread, it uses async function calls to maintain the concurrency. Node uses observer pattern. Node thread keeps an event loop and whenever any task get completed, it fires the corresponding event which signals the event listener function to get executed.